- (a.) Having the appearance of a metal.
- (a.) Having the properties of a nonmetal; nonmetallic; acid; negative.
- (n.) Now, one of several elementary substances which in the free state are unlike metals, and whose compounds possess or produce acid, rather than basic, properties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc., are metalloids.
- (n.) Formerly, the metallic base of a fixed alkali or alkaline earth; -- applied by Sir H. Davy to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). metalloid. Retrieved September 24, 2026, from http://smartdefine.org/metalloid/definitions/2032213 |
| Chicago | Webster's. 2011. "metalloid" http://smartdefine.org/metalloid/definitions/2032213 (accessed September 24, 2026). |
| Harvard | Webster's 2011, metalloid, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/metalloid/definitions/2032213>. |
| MLA | Webster's. "metalloid" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/metalloid/definitions/2032213> |